Mona Barthel

During her preparation for 2015, Barthel suffered a torn ligament in her right foot.

Barthel began her clay-court season at the Volvo Car Open. She beat American Jennifer Brady in the first round. In the second round, Barthel lost to eleventh seed Mirjana Lučić-Baroni. Next, Barthel competed at the first edition of the Ladies Open Biel Bienne. She won her first-round match over Jana Čepelová. In the second round, she lost to Elise Mertens. Barthel qualified for the J&T Banka Prague Open beating Sachia Vickery, Jasmine Paolini, and Denisa Allertová. She advanced to her first WTA singles final since 2015 by defeating sixth seed Shuai Zhang, Océane Dodin, Camila Giorgi, and third seed Barbora Strýcová. In the final, Barthel defeated Kristýna Plíšková to win her 4th WTA singles title and her first WTA singles title since 2014. After the tournament, her ranking went from 82 to 56. Barthel played her final tournament before the French Open at the Italian Open defeating Maria Sakkari and Varvara Lepchenko. In the first round, she beat Peng Shuai. In the second round, she defeated qualifier Qiang Wang. In the third round, Barthel lost to eighth seed and eventual champion Elina Svitolina. Ranked fifty at the French Open, Barthel was defeated in the first round by Tsvetana Pironkova.

Barthel has won four singles and three doubles titles on the WTA tour as well as five singles and one doubles title on the ITF circuit in her career. On 18 March 2013, Barthel reached her best singles ranking of world number 23. On 14 September 2015, she peaked at world number 63 in the doubles rankings.

Barthel started her clay-court season by participating at the Family Circle Cup, where she was the eighth seed. After receiving a bye into the first round, she lost to American qualifier Jessica Pegula, despite serving for the first set. Representing Germany for the first time, Barthel traveled to Stuttgart to play the Fed Cup World Group Play-offs versus Serbia. In her first match, she lost to Ana Ivanovic in three sets but beat Bojana Jovanovski to bring the tie all-square at 2–2. After Sabine Lisicki and Anna-Lena Grönefeld beat the Serbian doubles team, it secured Germany their place in the 2014 Fed Cup World Group. After Fed Cup, Barthel stayed in Stuttgart to play at the Porsche Tennis Grand Prix. She was defeated in the first round by Lucie Šafářová. In doubles, she partnered with fellow German Sabine Lisicki where they beat experienced players, Bethanie Mattek-Sands and Sania Mirza in the final. This was Barthel's first doubles title. In Madrid at the Mutua Madrid Open, Barthel lost in the first round to Kirsten Flipkens. Barthel had to withdraw from the Premier 5 tournament in Rome, due to a stomach illness. At the second Grand Slam of the year in Paris, she lost to eighth seed Angelique Kerber in the first round, despite having set points in the first set tie-break.

Barthel went to Paris to defend her title at the Open GDF Suez, but she lost in the first round to eighth seed Kirsten Flipkens. With this loss, Barthel dropped from thirty-six to sixty-four in the world rankings. Barthel added further disappointment to her season with a first round defeat at the Qatar Total Open to compatriot Annika Beck. She also lost in the final round of qualifying at the Dubai Tennis Championships to Maryna Zanevska. In Indian Wells at the BNP Paribas Open, Barthel was defeated in the first round by Francesca Schiavone. In Miami at the Sony Open Tennis, Barthel faced Rebecca Peterson in the first round. She retired down 4–6, 2-4 due to gastrointestinal illness. Playing at the BNP Paribas Katowice Open for the first time, she was defeated in the first round by Annika Beck.

Barthel began her clay court season at the Family Circle Cup in Charleston. Seeded fifteenth, she defeated Tímea Babos in the 1st round and American Sloane Stephens in the second round. In the third round, she retired against American Lauren Davis at 4–6, 0-3 due to dizziness. In Stuttgart at the Porsche Tennis Grand Prix, she lost in the first round to wildcard and compatriot Carina Witthöft. Seeded fifth at the Grand Prix SAR La Princesse Lalla Meryem, Barthel was defeated in the first round by eventual finalist Tímea Babos. She lost in the first round at the Mutua Madrid Open to qualifier Christina McHale. At the Italian Open, Barthel was defeated in the first round by tenth seed and eventual finalist Carla Suárez Navarro. Her final tournament before the French Open was the Internationaux de Strasbourg, where she was the eighth seed. In the first round, she faced French wildcard Virginie Razzano. Barthel retired down 2–6, 5-5 due to a wrist injury. At the French Open, Barthel was defeated in the first round by qualifier Paula Kania.

Barthel began her year at the ASB Classic. In the first round, she faced fourth seed Svetlana Kuznetsova. Barthel retired trailing 2–6, 1-1 due to illness. Seeded ninth at the 2016 Hobart International, she defeated Misaki Doi in the first round. In the second round, Barthel suffered a back injury, but she still managed to beat qualifier Naomi Osaka. She withdrew from her quarterfinal match against seventh seed Alizé Cornet due to the back injury. At the Australian Open, Barthel was defeated in the first round by Vania King.

After Wimbledon, Barthel competed at the Ladies Championship Gstaad. Seeded seventh, Barthel was defeated in the first round by the eventual champion Viktorija Golubic. Playing at the Swedish Open, Barthel was leading 4–6, 6–3, 3-0 in her first-round match against seventh seed Yaroslava Shvedova when Shvedova retired due to a back injury. In the second round, Barthel lost to Karin Knapp. As the top seed at the Advantage Cars Prague Open, Barthel retired in her quarterfinal match after losing the first set to qualifier and compatriot Antonia Lottner.

Playing at the first edition of the Oracle Challenger Series – Chicago, Barthel reached the final after victories over Lin Zhu, third seed Zarina Diyas, Dayana Yastremska, and sixth seed Sachia Vickery. She lost in the final to second seed Petra Martić. In Quebec City at the Coupe Banque Nationale, Barthel was defeated in the first round by fifth seed Sofia Kenin. Barthel qualified for the Korea Open beating Hanna Chang and Sílvia Soler Espinosa. She lost in the first round to seventh seed Irina-Camelia Begu. In Tashkent at the Tashkent Open, Barthel made it to the semifinals after defeating Nigina Abduraimova, seventh seed Evgeniya Rodina, and second seed Vera Lapko. She lost in her semifinal match to Margarita Gasparyan. Playing in Austria at the Upper Austria Ladies Linz, Barthel was defeated in the first round of qualifying by Ekaterina Alexandrova. Barthel played her final tournament of the season at the Al Habtoor Tennis Challenge in Dubai. Seeded fifth, she lost in her quarterfinal match to second seed and eventual finalist Viktória Kužmová.

In Hua Hin at the Thailand Open, Barthel lost in the second round to top seed Garbiñe Muguruza. At the Hungarian Ladies Open, Barthel was defeated in the first round by Irina-Camelia Begu. In March, Barthel competed at the BNP Paribas Open. She won a tough first-round match over qualifier Lin Zhu. In the second round, she beat seventeenth seed Madison Keys. In the third round, she defeated fifteenth seed Julia Görges to advance to the fourth round at Indian Wells for the first time since 2013. She lost in her fourth round match to Venus Williams. Barthel was defeated in the final round of qualifying at the Miami Open to Viktorija Golubic.

Competing at the Dow Tennis Classic in Midland, Barthel was defeated in the first round by American Jamie Loeb. Playing at the first edition of the Kentucky Open, Barthel reached the quarterfinals where she lost to eventual champion Olga Govortsova. In Indian Wells at the Oracle Challenger Series – Indian Wells, Barthel was defeated in the first round by eventual champion Irina-Camelia Begu.

Barthel plays aggressively, and is primarily known for her power and movement. She is noted for having a strong serve and for hitting shots down the line, as well as for a tendency to approach the net. In her straight-sets victory at the 2013 GDF Suez, she hit 53 winners. Barthel produces deep groundstrokes, and hits powerfully on both the forehand and backhand sides.

Only main-draw results in WTA Tour, Grand Slam tournaments and Olympic Games are included in win–loss records.

Seeded seventh at the Swedish Open, Barthel was defeated in the semifinal round by defending champion and eventual champion Polona Hercog. Playing for Germany at the 2012 Summer Olympics, Barthel lost in the first round to Urszula Radwańska.

Barthel started 2011 by playing a $25k ITF tournament in Andrézieux-Bouthéon, France. She won the tournament defeating Stephanie Vogt in the final. Next, Barthel competed at a $25k ITF tournament in Grenoble, France. She lost in the second round to Stéphanie Foretz Gacon. Playing at a $25k ITF tournament in Sutton, England, Barthel advanced to the final where she was defeated by Kristina Mladenovic.

Barthel started her year at the ASB Classic in Auckland. She defeated Jelena Dokić in the first round. In the second round, she lost in a close match to top seed and compatriot Sabine Lisicki. Qualifying for the Moorilla Hobart International in Hobart, Barthel reached the final after wins over Romina Oprandi, second seed Anabel Medina Garrigues, fifth seed Jarmila Gajdošová, and fourth seed Angelique Kerber. In the final, she defeated top seed Yanina Wickmayer to claim her first WTA title. With this win, Barthel became the first qualifier since September 2010 to win a WTA tournament. Following her maiden title win, Barthel made her debut at the Australian Open. Barthel won her first-round match when her opponent, Anne Keothavong, retired due to illness. In the second round, she beat thirty-second seed Petra Cetkovská. In the third round, she lost to third seed and eventual champion Victoria Azarenka.

Barthel began her clay-court season at the Porsche Tennis Grand Prix. She reached the qualifying round where she lost to Ajla Tomljanović. However, she got a Lucky Loser spot in the main draw. In the first round, Barthel lost to fifth seed Jelena Janković even though she had several match points against the Serb. Barthel then lost in the 2nd round of qualifying at the Portugal Open to Kiki Bertens and at the Mutua Madrid Open to Petra Cetkovská. Barthel qualified for the Italian Open defeating María Teresa Torró Flor and Virginie Razzano. In the first round, she lost to thirteenth seed Carla Suárez Navarro. Before the French Open, Barthel competed at the Nürnberger Versicherungscup. She defeated Belinda Bencic in the first round. In the second round, she beat eighth seed Annika Beck before losing in the quarterfinals to fourth seed Elina Svitolina. Barthel had a good run at the French Open. She beat Karin Knapp in her opener. She advanced to the third round when compatriot and sixteenth seed Sabine Lisicki was forced to retire with a wrist injury. In the third round, Barthel lost to French wildcard Pauline Parmentier.

Barthel played her first ITF tournament in July 2007 in Frinton where she qualified for the main tournament and reached the quarterfinals, losing to Jade Curtis. In July 2008, she reached the finals of the Frinton tournament, losing to Tara Moore, and the $10,000 event in Gausdal, losing to Svenja Weidemann. She also reached the doubles final in Gausdal partnering Weidemann, where they lost to Tegan Edwards and Marcella Koek. Her first ITF tournament victory was in January 2010 at the $10,000 ITF tournament in Wrexham, beating Anne Kremer of Luxembourg in straight sets. In February 2010, she reached the doubles final of the $50,000+H Biberach tournament, partnering Carmen Klaschka, losing to Stéphanie Cohen-Aloro and Selima Sfar. In April 2010, she won the singles title at the $50,000 Torhout tournament, beating Rebecca Marino in the final, and also won in doubles, partnering Justine Ozga, defeating Hana Birnerová and Ekaterina Bychkova in the final.

Mona Barthel (born 11 July 1990) is a German tennis player.

Mona Barthel was born in Bad Segeberg to Wolfgang Barthel, who won the shot put event at the 1970 European Junior Athletics Championships in Paris, and Dr. Hannelore. She was raised in a tennis-playing family, and took an interest in the game at age 3. She has cited Steffi Graf as an inspiration. Barthel moved to Neumünster, where she completed her Abitur in 2009, having attended the Klaus Groth Schule.